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JP2012216409A Active / In Force JP ⏱️ 4.4 years remaining

Active material, electrode, lithium ion secondary battery, and active material manufacturing method

Assignee: TDK Corp
•
Filing: 2011-03-31
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Granted: —
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Expires: 2031-03-31
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Abstract

Abstract Translated from Japanese 【課題】高放電レートでの十分な放電容量を得られる活物質、これを含む電極、当該電極を備えるリチウム二次電池、及び活物質の製造方法を提供する。 【解決手段】LiVOPO 4 粉と、第一炭素粉と、第二炭素粉と、を含む活物質である。第一炭素粉のラマンスペクトルにおける2700cm −1 付近に観察される2Dバンドピーク高さに対する、第一炭素粉のラマンスペクトルにおける1580cm −1 付近に観察されるGバンドピーク高さの比をA1とし、第二炭素粉のラマンスペクトルにおける2700cm −1 付近に観察される2Dバンドピーク高さに対する、第二炭素粉のラマンスペクトルにおける1580cm −1 付近に観察されるGバンドピーク高さの比をA2とした時に、0.05≦A1/A2≦0.5を満たす。 【選択図】なし An active material capable of obtaining a sufficient discharge capacity at a high discharge rate, an electrode including the active material, a lithium secondary battery including the electrode, and a method for producing the active material are provided. An active material containing LiVOPO 4 powder, first carbon powder, and second carbon powder. The ratio of the G band peak height observed near 1580 cm −1 in the Raman spectrum of the first carbon powder to the 2D band peak height observed near 2700 cm −1 in the Raman spectrum of the first carbon powder is A1, The ratio of the G band peak height observed near 1580 cm −1 in the Raman spectrum of the second carbon powder to the 2D band peak height observed near 2700 cm −1 in the Raman spectrum of the second carbon powder was defined as A2. Sometimes 0.05 ≦ A1 / A2 ≦ 0.5 is satisfied. [Selection figure] None

Inventors

  • 👤 Keitaro Otsuki
  • 👤 佳太郎 大槻
  • 👤 Atsushi Sano
  • 👤 篤史 佐野

Bibliographic Details

Application Number —
Jurisdiction JP
Data Source google_patents
Last Synchronized 2026-11-05 18:26
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/64; H01M4/66; H01M4/663; H01M4/13; H01M4/133; H01M4/136; H01M4/36; H01M4/362; H01M4/364; H01M4/58; H01M4/5825; H01M4/583; H01M4/587; H01M10/00; H01M10/05; H01M10/052; H01M10/0525; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02P; Y02P70/00; Y02P70/50

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References Cited (Backward Citations)

JP2007317583A Cited
JP2010086777A Cited
JP2010218830A Cited
JP2011034675A Cited
JP2011054559A Cited

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